This is a picture of a large Critter Quitter that was used to cover a damaged small bullet boot. Bullet boots are plastic versions of lead flashing, and sometimes get chewed. Since they are soft they are easily damaged when this happens. A large Critter Quitter fits nicely over a 2 inch or 1 1/2 inch bullet boot and protects it However, it will not fit over a 3 inch bullet boot, but not too many of those around. However, the boot needs to be intact at the bottom to assure a seal as Critter Quitters are not flashing replacements.